55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
// Copyright (c) 1994 James Clark
|
|
// See the file COPYING for copying permission.
|
|
|
|
#ifndef OffsetOrderedList_INCLUDED
|
|
#define OffsetOrderedList_INCLUDED 1
|
|
|
|
#include "types.h"
|
|
#include "Owner.h"
|
|
#include "NCVector.h"
|
|
#include "Boolean.h"
|
|
#include "Mutex.h"
|
|
|
|
#ifdef SP_NAMESPACE
|
|
namespace SP_NAMESPACE {
|
|
#endif
|
|
|
|
struct OffsetOrderedListBlock {
|
|
Offset offset; // next Offset
|
|
size_t nextIndex; // index of first item in next block
|
|
enum { size = 200 };
|
|
unsigned char bytes[size];
|
|
};
|
|
|
|
// This is an ordered list of Offsets with no duplicates.
|
|
|
|
class OffsetOrderedList {
|
|
public:
|
|
OffsetOrderedList();
|
|
// off must be > the last offset added.
|
|
void append(Offset off);
|
|
// Find the last offset in the list <= off.
|
|
Boolean findPreceding(Offset off, size_t &foundIndex, Offset &foundOffset)
|
|
const;
|
|
size_t size() const;
|
|
private:
|
|
OffsetOrderedList(const OffsetOrderedList &); // undefined
|
|
void operator=(const OffsetOrderedList &); // undefined
|
|
void addByte(unsigned char b);
|
|
// bytes used in current block
|
|
int blockUsed_;
|
|
NCVector<Owner<OffsetOrderedListBlock> > blocks_;
|
|
Mutex mutex_;
|
|
};
|
|
|
|
inline
|
|
size_t OffsetOrderedList::size() const
|
|
{
|
|
return blocks_.size() == 0 ? 0 : blocks_.back()->nextIndex;
|
|
}
|
|
|
|
#ifdef SP_NAMESPACE
|
|
}
|
|
#endif
|
|
|
|
#endif /* not OffsetOrderedList_INCLUDED */
|